40641

Appears in sequences

• Character of extremal vertex operator algebra of rank 9.at n=6A028527
• Numbers having four 6's in base 9.at n=7A043480
• Triangular polyominoes (or polyiamonds) with n cells at most (turning over is allowed, holes are allowed, must be connected along edges).at n=13A130867
• Nonnegative values x of solutions (x, y) to the Diophantine equation x^2 + (x+84847)^2 = y^2.at n=25A201917
• Odd composite integers m such that U(m)^2 == 1 (mod m) and V(m) == 7 (mod m), where U(m) and V(m) are the m-th generalized Lucas and Pell-Lucas numbers of parameters a=7 and b=-1, respectively.at n=41A337630
• Centered pentagonal numbers which are the products of four distinct primes.at n=4A382451